Unrecognized feature iframe allow. For more information, see the main Feature Policy a...

Unrecognized feature iframe allow. For more information, see the main Feature Policy article. Oct 20, 2025 · Since the JavaScript in the iframe is not same-origin, it is subject to permissions policies. ) based on the origin of the request. . It can do so by delivering the following HTTP response header to define a Permissions The allow attribute in iframes is used to enable certain features or permissions for the content inside the iframe. The HTML <iframe> tag allows you to embed another HTML page into your current page. Mar 13, 2025 · FeaturePolicy. js:155 Unrecognized feature: 'ambient-light-sensor'. FeaturePolicy. Chrome has a test site for the new behavior, linked from their own feature tracker which also shows the warning. Examples Basic usage SecureCorp Inc. Jul 4, 2025 · The HTTP Permissions-Policy header ambient-light-sensor directive controls whether the current document is allowed to gather information about the amount of light in the environment around the device through the AmbientLightSensor interface. Specifications This HTML tutorial explains how to use the HTML element called the iframe tag with syntax and examples. io, you'll see that all the examples are iframed, so you can follow their example. Oct 18, 2021 · This StackOverflow discussion addresses an error with Permissions-Policy header related to the unrecognized feature 'interest cohort'. Dec 15, 2025 · The HTTP Content-Security-Policy response header allows website administrators to control resources the user agent is allowed to load for a given page. Note that features appearing on this list might still be behind a user permission. YouTube specifies it in their embed code. Jan 26, 2026 · The HTTP Permissions-Policy response header provides a mechanism to allow and deny the use of browser features in a document or within any <iframe> elements in the document. wants to disallow fullscreen within all cross-origin iframes except those whose origin is https://example. These are separate but related — see Inheritance of policies for embedded content for details. Jun 7, 2023 · iframe console http-permissions-policy edited Jun 7, 2023 at 16:28 Clifford 94. May 3, 2020 · Unrecognized feature: 'vr'. But Chrome on desktop doesn't recognize it. The <iframe> allow attribute, to control feature usage only in specific <iframe> s. Sep 6, 2023 · This blog post talks about the fact that if you want to use the Web Share API on a third-party iframe, you need to use the web-share value to the allow attribute on the iframe. Jan 27, 2026 · The top-level browsing context and same-origin iframes are allowed access to the fullscreen feature by default. We can't change this in the Teams app, as it creates the container iframe we are hosted in. 2275519798 -waffle_js_prod_ritzmaestro. allowedFeatures Experimental Returns a list of names of all features supported by the User Agent and allowed by the Permissions Policy. Nov 3, 2025 · The Permissions-Policy HTTP header, to control feature usage in received responses and any embedded content within the page (which includes <iframe> s). The page loads but the youtube images appear really slowly (several minutes) and some not at all, and I get thousands of warning messages. Mar 13, 2025 · The policy defines what features are available to the <iframe> element (for example, access to the microphone, camera, battery, web-share, etc. You must set allowvr="yes" on the iframe. Apr 20, 2022 · Manage how your page and embedded third-party iframes access to browser features. 4k 14 93 176 The HTTP Feature-Policy header provides a mechanism to allow and deny the use of browser features in its own frame, and in content within any <iframe> elements in the document. May 3, 2020 · 之前我们提到了iframe跨域，今天我们在原有的基础之上进行“实例”的讲解。 通过iframe跨域实现表单数据的提交。 如果想了解iframe跨域，可以发送“iframe跨域”到“HTML5学堂”公众号。 为何提交数据还要跨域？ An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing. Without the allow attribute on our <iframe> it would throw an error when the user tries to execute that JavaScript. getAllowlistForFeature Experimental Returns the allow for the specified feature. Jun 13, 2023 · This feature was required as of Chrome 110 to be added to the allow property of iframes if the iframe wants to use the Web Share API. com. Dec 4, 2025 · We have narrowed the problem down to part of this specification where an iframe requires an attribute allow="local-network-access". If you go to https://aframe. Jan 30, 2022 · I have a page that has a hundred or so youtube links in iframes, something like the sample code below. This helps guard against cross-site scripting attacks. With a few exceptions, policies mostly involve specifying server origins and script endpoints. It acts as a security mechanism to specify what the embedded content is allowed to do. env suv lhl aaw vhq iea vpe rag lxl xgj vpe tbf ohh irq sru